Panic when logging out from serial console

ltning at ltning at
Sun Apr 10 01:27:56 PDT 2005

Hi all,

warning: This report might be somewhat vague.
For quite a while now I`ve been plagued with the problem that logging out from a
serial console causes the box to panic. For a while I`ve been sure this was
isolated to one of my boxen, because it`s been acting up in other ways as well,
but today it happened on two other boxes too! And these boxes have been rock
stable for the last two years.

I`m running a fairly recent variation of RELENG-5 on all the boxes; one of them
is amd64, the two others - including the one I`ve pasted from - are plain old
p3 machines. They are all dual-CPU though.

I have no clue what I can do from here; has anyone seen this before? I can`t
always reproduce it, but the risk is fairly high - around 33% I`d say.


Thanks for your attention, details below.

Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 00
fault virtual address   = 0x1c
fault code              = supervisor write, page not present
instruction pointer     = 0x8:0xc0620b5f
stack pointer           = 0x10:0xdadbd988
frame pointer           = 0x10:0xdadbd994
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, def32 1, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 51999 (getty)
trap number             = 12
panic: page fault
cpuid = 1
boot() called on cpu#0
Uptime: 66d11h24m50s


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